Re: [PATCH] ACPI: skip boot interrupt rerouting when index is zero

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[+Bjorn, linux-pci]

On Friday, February 10, 2017 12:45:17 PM Stefan Assmann wrote:
> When checking for boot interrupts and PRT index is zero avoid doing
> any interrupt rerouting since the code currently does not handle
> determining the IRQ via _CRS method.
> 
> Fixes:
> https://bugzilla.kernel.org/show_bug.cgi?id=43074
> 
> Signed-off-by: Stefan Assmann <sassmann@xxxxxxxxx>

Bjorn, what do you think?

> ---
>  drivers/acpi/pci_irq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
> index c576a6f..6ecbde0 100644
> --- a/drivers/acpi/pci_irq.c
> +++ b/drivers/acpi/pci_irq.c
> @@ -280,7 +280,7 @@ static int bridge_has_boot_interrupt_variant(struct pci_bus *bus)
>  static int acpi_reroute_boot_interrupt(struct pci_dev *dev,
>  				       struct acpi_prt_entry *entry)
>  {
> -	if (noioapicquirk || noioapicreroute) {
> +	if (noioapicquirk || noioapicreroute || entry->index == 0) {
>  		return 0;
>  	} else {
>  		switch (bridge_has_boot_interrupt_variant(dev->bus)) {
> 

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